/* ===== 品牌中心页面专属样式（作用域：.page-about） ===== */

.page-about {
  --about-ink-line: rgba(212, 175, 55, .26);
  --about-glass-ink: rgba(26, 26, 26, .58);
  --about-paper-line: rgba(26, 26, 26, .12);
  --about-shell: clamp(56px, 8vw, 108px);
}

/* ---------- 首屏品牌视觉 ---------- */
.page-about .brand-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  min-height: min(88vh, 880px);
  background: var(--ink);
}

.page-about .brand-hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-about .brand-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: .6;
}

.page-about .brand-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(120% 78% at 50% 26%, rgba(212, 175, 55, .26), rgba(212, 175, 55, 0) 62%),
    linear-gradient(180deg, rgba(26, 26, 26, .38) 0%, rgba(26, 26, 26, .86) 62%, var(--ink) 100%);
}

.page-about .brand-hero__body {
  width: 100%;
  padding-block: clamp(72px, 14vh, 168px) clamp(40px, 7vh, 76px);
}

.page-about .brand-hero__eyebrow {
  display: inline-block;
  margin: 0;
  padding: 7px 16px;
  border: 1px solid rgba(212, 175, 55, .5);
  border-radius: 999px;
  background: rgba(140, 33, 24, .5);
  color: var(--gold-light);
  font-size: 13px;
  letter-spacing: .18em;
  line-height: 1;
}

.page-about .brand-hero__title {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(31px, 7vw, 72px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--paper);
  transform: rotate(-1.2deg);
  transform-origin: left center;
  text-shadow: 0 3px 0 rgba(140, 33, 24, .55), 0 0 48px rgba(212, 175, 55, .38);
  -webkit-text-stroke: 1.2px rgba(212, 175, 55, .8);
}

.page-about .brand-hero__lead {
  max-width: 60ch;
  margin: 24px 0 0;
  color: rgba(245, 240, 232, .88);
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
}

.page-about .brand-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0 0;
}

.page-about .brand-hero__facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 16px clamp(24px, 4vw, 52px);
  margin: 38px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--about-ink-line);
}

.page-about .brand-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .brand-hero__num {
  color: var(--gold-light);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1.1;
}

.page-about .brand-hero__facts em {
  color: rgba(245, 240, 232, .68);
  font-size: 13px;
  font-style: normal;
  letter-spacing: .06em;
}

/* ---------- 面包屑 ---------- */
.page-about .brand-crumb {
  margin: 0;
  padding: 18px 0 4px;
}

.page-about .brand-crumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
}

.page-about .brand-crumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--gold-deep);
}

.page-about .brand-crumb a {
  color: var(--gray);
  text-decoration: none;
}

.page-about .brand-crumb a:hover,
.page-about .brand-crumb a:focus-visible {
  color: var(--red);
  text-decoration: underline;
}

.page-about .brand-crumb [aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
}

/* ---------- 章节侧边指示条 ---------- */
.page-about .chapter-rail {
  display: none;
}

/* ---------- 通用章节节距 ---------- */
.page-about :where(.brand-origin, .brand-journey, .brand-team, .brand-cadence, .brand-service, .brand-partners, .brand-next) {
  position: relative;
  padding-block: var(--about-shell);
}

.page-about .section-head__num {
  color: var(--gold);
  font-size: clamp(20px, 3vw, 30px);
  letter-spacing: .08em;
}

.page-about .section-head--paper .section-head__num {
  color: var(--red);
}

/* ---------- 左右交替图文 ---------- */
.page-about .split {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
  margin-top: clamp(28px, 4vw, 48px);
}

.page-about .split__text p {
  margin: 0 0 1.2em;
}

.page-about .split__text p:last-child {
  margin-bottom: 0;
}

.page-about .split__figure {
  margin: 0;
}

/* ---------- 引用块 ---------- */
.page-about .pull-quote {
  margin: 0;
  padding: 22px 22px 22px 26px;
  border-left: 5px solid var(--red);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--about-glass-ink);
  backdrop-filter: blur(6px);
}

.page-about .pull-quote p {
  margin: 0;
  color: var(--paper);
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 700;
  line-height: 1.6;
}

.page-about .pull-quote cite {
  display: block;
  margin-top: 14px;
  color: var(--gold-light);
  font-size: 12px;
  font-style: normal;
  letter-spacing: .14em;
}

/* ---------- 02 发展阶段 ---------- */
.page-about .brand-journey {
  overflow: hidden;
  background: var(--red);
}

.page-about .brand-journey__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-about .brand-journey__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .22;
  mix-blend-mode: screen;
}

.page-about .brand-journey .wrap {
  position: relative;
  z-index: 1;
}

.page-about .brand-journey .section-head__num,
.page-about .brand-journey .section-head__desc {
  color: rgba(245, 240, 232, .82);
}

.page-about .brand-journey .section-head__title {
  color: var(--paper);
}

.page-about .journey {
  list-style: none;
  display: flex;
  gap: clamp(18px, 3vw, 34px);
  margin: clamp(30px, 4vw, 44px) 0 0;
  padding: 22px 6px 26px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-color: rgba(212, 175, 55, .65) rgba(255, 255, 255, .12);
  scrollbar-width: thin;
}

.page-about .journey::-webkit-scrollbar {
  height: 6px;
}

.page-about .journey::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, .16);
  border-radius: 999px;
}

.page-about .journey::-webkit-scrollbar-thumb {
  background: var(--gold);
  border-radius: 999px;
}

.page-about .journey:focus-visible {
  outline: 2px solid var(--gold-light);
  outline-offset: 6px;
  border-radius: var(--radius-sm);
}

.page-about .journey__item {
  position: relative;
  flex: 0 0 min(76vw, 300px);
  scroll-snap-align: start;
  padding: 62px 18px 22px;
  border-radius: var(--radius);
  background: rgba(26, 26, 26, .32);
  border: 1px solid rgba(240, 217, 121, .2);
  backdrop-filter: blur(8px);
}

.page-about .journey__item::before {
  content: "";
  position: absolute;
  top: 24px;
  left: 20px;
  right: -34px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold) 0%, rgba(212, 175, 55, .18) 100%);
}

.page-about .journey__item::after {
  content: "";
  position: absolute;
  top: 17px;
  left: 13px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(212, 175, 55, .22), 0 0 20px rgba(240, 217, 121, .9);
}

.page-about .journey__item:last-child::before {
  right: 0;
  background: linear-gradient(90deg, var(--gold) 0%, rgba(212, 175, 55, 0) 100%);
}

.page-about .journey__stage {
  margin: 0 0 10px;
  color: var(--gold-light);
  font-size: 12px;
  letter-spacing: .16em;
}

.page-about .journey__title {
  margin: 0 0 10px;
  color: var(--paper);
  font-size: clamp(18px, 2vw, 21px);
  font-weight: 800;
  line-height: 1.35;
}

.page-about .journey__text {
  margin: 0;
  color: rgba(245, 240, 232, .84);
  font-size: 15px;
  line-height: 1.72;
}

.page-about .journey__hint {
  margin: 6px 0 0;
  color: rgba(245, 240, 232, .6);
  font-size: 12px;
  letter-spacing: .1em;
}

/* ---------- 03 团队构成 ---------- */
.page-about .team-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(212px, 1fr));
  gap: 16px;
  margin: clamp(34px, 4vw, 52px) 0 0;
  padding: 0;
}

.page-about .team-stat {
  padding: 22px 20px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--about-paper-line);
  border-top: 4px solid var(--red);
  background: #FFFDF8;
}

.page-about .team-stat__num {
  display: block;
  color: var(--red);
  font-size: clamp(28px, 3.6vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
}

.page-about .team-stat__title {
  margin: 12px 0 8px;
  font-size: 16px;
  font-weight: 800;
  color: var(--ink);
}

.page-about .team-stat__text {
  margin: 0;
  color: var(--gray);
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 04 更新节奏 ---------- */
.page-about .cadence {
  list-style: none;
  display: grid;
  gap: 18px;
  margin: clamp(30px, 4vw, 46px) 0 0;
  padding: 0;
}

.page-about .cadence__item {
  padding: 24px 22px;
  border-left: 6px solid var(--gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--about-glass-ink);
  backdrop-filter: blur(6px);
}

.page-about .cadence__cycle {
  display: inline-block;
  margin-bottom: 12px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--red);
  color: var(--paper);
  font-size: 12px;
  letter-spacing: .16em;
}

.page-about .cadence__title {
  margin: 0 0 10px;
  color: var(--paper);
  font-size: clamp(18px, 2vw, 21px);
  font-weight: 800;
  line-height: 1.4;
}

.page-about .cadence__text {
  margin: 0;
  color: rgba(245, 240, 232, .82);
  font-size: 15px;
  line-height: 1.75;
}

/* ---------- 05 服务流程 ---------- */
.page-about .flow {
  list-style: none;
  display: grid;
  gap: 18px;
  margin: clamp(30px, 4vw, 46px) 0 0;
  padding: 0;
  counter-reset: about-flow;
}

.page-about .flow__step {
  position: relative;
  padding: 24px 22px 24px 22px;
  border-radius: var(--radius-sm);
  background: #FFFDF8;
  border: 1px solid var(--about-paper-line);
}

.page-about .flow__num {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--red);
  font-size: 13px;
  letter-spacing: .18em;
}

.page-about .flow__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: var(--ink);
}

.page-about .flow__text {
  margin: 0;
  color: var(--gray);
  font-size: 14px;
  line-height: 1.75;
}

.page-about .service-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 20px;
  margin: clamp(26px, 3vw, 36px) 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--about-paper-line);
}

.page-about .service-note__text {
  flex: 1 1 260px;
  color: var(--gray);
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 06 合作生态 ---------- */
.page-about .partners {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  margin-top: clamp(30px, 4vw, 46px);
}

.page-about .partners__figure {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 10px;
  border-radius: var(--radius);
  background: radial-gradient(circle at 50% 50%, rgba(192, 57, 43, .32), rgba(26, 26, 26, 0) 68%);
}

.page-about .orbit {
  width: min(100%, 420px);
  height: auto;
}

.page-about .orbit__ring {
  fill: none;
  stroke: rgba(212, 175, 55, .34);
  stroke-width: 1.4;
}

.page-about .orbit__ring--outer {
  stroke: rgba(212, 175, 55, .18);
}

.page-about .orbit__ring--core {
  stroke: var(--gold);
  stroke-width: 2.4;
  fill: rgba(192, 57, 43, .28);
}

.page-about .orbit__dot {
  fill: var(--gold-light);
}

.page-about .orbit__label {
  fill: rgba(245, 240, 232, .86);
  font-family: var(--font-sans);
  font-size: 15px;
  letter-spacing: .06em;
}

.page-about .orbit__label--brand {
  fill: var(--gold-light);
  font-size: 16px;
  font-weight: 700;
}

.page-about .orbit__label--sub {
  fill: rgba(245, 240, 232, .62);
  font-size: 11px;
  letter-spacing: .14em;
}

.page-about .partners__list {
  display: grid;
  gap: 14px;
}

.page-about .partner-block {
  padding: 20px 20px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(240, 217, 121, .22);
  background: var(--about-glass-ink);
  backdrop-filter: blur(6px);
  transition: border-color .24s var(--ease), transform .24s var(--ease);
}

.page-about .partner-block:hover,
.page-about .partner-block:focus-within {
  border-color: rgba(240, 217, 121, .62);
  transform: translateY(-2px);
}

.page-about .partner-block__title {
  margin: 0 0 8px;
  color: var(--gold-light);
  font-size: 16px;
  font-weight: 800;
}

.page-about .partner-block__text {
  margin: 0;
  color: rgba(245, 240, 232, .82);
  font-size: 14px;
  line-height: 1.75;
}

.page-about .partners__cta {
  margin: 8px 0 0;
}

/* ---------- 07 下一步 ---------- */
.page-about .brand-next {
  background: var(--red);
  overflow: hidden;
}

.page-about .brand-next .section-head__num,
.page-about .brand-next .section-head__desc {
  color: rgba(245, 240, 232, .82);
}

.page-about .brand-next .section-head__title {
  color: var(--paper);
}

.page-about .next-grid {
  list-style: none;
  display: grid;
  gap: 18px;
  margin: clamp(30px, 4vw, 46px) 0 0;
  padding: 0;
}

.page-about .next-card {
  padding: 26px 22px 28px;
  border-radius: var(--radius-sm);
  background: rgba(26, 26, 26, .42);
  border: 1px solid rgba(240, 217, 121, .26);
  backdrop-filter: blur(8px);
}

.page-about .next-card__title {
  position: relative;
  margin: 0 0 12px;
  padding-left: 16px;
  color: var(--gold-light);
  font-size: 18px;
  font-weight: 800;
}

.page-about .next-card__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: 2px;
  background: var(--gold);
}

.page-about .next-card__text {
  margin: 0;
  color: rgba(245, 240, 232, .86);
  font-size: 14px;
  line-height: 1.78;
}

.page-about .brand-cta {
  display: grid;
  gap: 18px;
  margin-top: clamp(34px, 4vw, 52px);
  padding: 26px 22px;
  border-radius: var(--radius);
  border: 1px solid rgba(240, 217, 121, .32);
  background: rgba(26, 26, 26, .38);
  backdrop-filter: blur(8px);
}

.page-about .brand-cta__text {
  margin: 0;
  color: var(--paper);
  font-size: 16px;
  line-height: 1.75;
}

.page-about .brand-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-about .cadence {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .partners__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .next-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .brand-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .split--text-first .split__figure {
    position: sticky;
    top: 96px;
  }

  .page-about .split--figure-first {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-about .split--figure-first .split__text {
    order: 2;
  }

  .page-about .split--figure-first .split__figure {
    order: 1;
  }

  .page-about .partners {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
  }

  .page-about .partners__figure {
    position: sticky;
    top: 96px;
    padding: 26px;
  }

  .page-about .chapter-rail {
    display: block;
    position: fixed;
    right: max(14px, calc((100vw - var(--wrap)) / 2 - 62px));
    top: 50%;
    transform: translateY(-50%);
    z-index: 20;
  }

  .page-about .chapter-rail ol {
    list-style: none;
    display: grid;
    gap: 4px;
    margin: 0;
    padding: 10px 8px;
    border-radius: 999px;
    background: rgba(26, 26, 26, .72);
    border: 1px solid rgba(212, 175, 55, .24);
    backdrop-filter: blur(10px);
  }

  .page-about .chapter-rail a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    border-radius: 999px;
    color: rgba(245, 240, 232, .5);
    text-decoration: none;
    transition: color .24s var(--ease), background-color .24s var(--ease);
  }

  .page-about .chapter-rail a span {
    font-size: 12px;
    letter-spacing: .08em;
  }

  .page-about .chapter-rail a i {
    position: absolute;
    right: calc(100% + 10px);
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(26, 26, 26, .9);
    color: var(--paper);
    font-size: 12px;
    font-style: normal;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s var(--ease);
  }

  .page-about .chapter-rail a:hover,
  .page-about .chapter-rail a:focus-visible {
    color: var(--gold-light);
    background: rgba(192, 57, 43, .55);
  }

  .page-about .chapter-rail a:hover i,
  .page-about .chapter-rail a:focus-visible i {
    opacity: 1;
  }

  .page-about .chapter-rail a[aria-current="true"] {
    color: var(--ink);
    background: var(--gold);
  }
}

@media (min-width: 1180px) {
  .page-about .journey__item {
    flex-basis: 320px;
  }
}

/* ---------- 降低动态效果 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .partner-block,
  .page-about .chapter-rail a {
    transition: none;
  }

  .page-about .partner-block:hover,
  .page-about .partner-block:focus-within {
    transform: none;
  }

  .page-about .brand-hero__title {
    transform: none;
  }
}